Raflis, R., H. S. Yuwono, Y. Yanwirasti, and E. Decroli. “Vitamin D Receptor Gene Polymorphism FokI and 25-Hydroxy Vitamin D Levels Among Indonesian Diabetic Foot Patients”. Open Access Macedonian Journal of Medical Sciences, vol. 8, no. A, Sept. 2020, pp. 846-51, doi:10.3889/oamjms.2020.4009.